Uttered, as an element of speech, without tone, or proper vocal sound; voiceless; unintonated; nonvocal; atonic; whispered; aspirated; sharp; hard, as f, p, s, etc.; -- opposed to sonant. See Guide to Pronunciation, §§169, 179, 180.

A surd element of speech. See Surd, a., 4.

a consonant produced without sound from the vocal cords

Unheard.

Sikh male. Also called Sardar, Sardarji. Typically turbaned, bearded. Butt of jokes that show him in unintelligent light (you know, the "an American, a Japanese, and a Surd were traveling..." kind), often of the Surds' own invention.

Involving surds; not capable of being expressed in rational numbers; radical; irrational; as, a surd expression or quantity; a surd number.

A quantity which can not be expressed by rational numbers; thus, *2 is a surd.

a useful way of giving a value in a precise, or exact, form where there is no need to be concerned with accuracy or decimal places

Net having the sense of hearing; deaf.

a number written in a form that includes a square root

a square root which cannot be reduced to a whole number